PMC-Sierra, Inc.
PM4541T1XC-EVBD
TELECOM STANDARD PRODUCT
PMC-920314
ISSUE 2
T1XC EVALUATION DAUGHTERBOARD
should be disabled. This is done by moving the jumpers on J31 and J3, which
provide power to RAVD, to the grounding position.
Two DSX-1 analog interfaces are also provided. Both the transmit and receive DSX-
1 interfaces on each T1XC can be connected to either a mini-bantam or BNC
connector. The analog transmit and receive interface are passed through a 1:1.36
and 2:1 transformer, respectively, and then connected to either Bantam or BNC
connectors. The mini-bantam is terminated with a 100 ohm resistor to prevent
"kick-back" when a plug is inserted or removed from the jack. The BNC interface is
a standard 50 ohm coax with stuffing options for ground or resistor connections
across the shield (or barrel). While some test equipment may require a 75 ohm
interface, a 50 ohm connection should not cause any appreciable mismatch for test
frequencies used by the T1XC or E1XC devices.
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PMC [ PMC-SIERRA, INC ]
